#ifndef __SUPER_H__
#define __SUPER_H__



/*
**	despcrition of device information
*/
struct sb_dev_t{
	struct list_head s_list;//superblock上链表
	unsigned long s_blocksize;
	unsigned char s_dirt;
	kdev_t s_dev;
	struct file_system_type *s_type;
	unsigned long magic;
	wait_queue_head_t s_wait;
	unsigned int bd_count;
	struct semaphore_t rd_sema;
	char s_flag;
	union{
		struct ext2_sb_info ext2_sb;
		struct usbdev_sb_info usbdevfs_sb;
	}u;
};



#endif
//__SUPER_H__

